Workshop Technology
Which of the following welding process uses non-consumable electrodes?

Manual arc welding
MIG welding
TIG welding
Submerged arc welding

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Workshop Technology
The welding set up is said to have straight polarity, when

Work is connected to the negative terminal and the electrode holder to the positive terminal
Work is connected to the positive terminal and the electrode holder is earthed
Work is connected to the negative terminal and the electrode holder is earthed
Work is connected to the positive terminal and the electrode holder to the negative terminal

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